Free UUID v4 Generator
Generate universally unique identifiers (UUIDs) instantly. Perfect for databases and APIs.
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Frequently asked questions
How do I generate a UUID online?
Select the quantity of UUIDs you need (1-50), configure the format options (uppercase/with hyphens), and click "Generate". Copy individual UUIDs or all at once. Completely free and instant.
What is a UUID v4?
A UUID (Universally Unique Identifier) v4 is a 128-bit identifier generated using random numbers. Format: 550e8400-e29b-41d4-a716-446655440000. UUID v4 is ideal for database primary keys and API identifiers.
Are UUIDs truly unique?
Yes. With 2^128 possible values, the probability of collision is astronomically small. UUID v4 uses cryptographic randomness, making it safe for distributed systems without coordination.